And for those in the "size matters" department, the SQ5 rolls on 20-inch wheels, with 21-inch units optional. The SQ5 goes on sale this summer.

The government is proposing that electric cars and hybrids make some sort of warning sound when traveling at low speeds. The idea is to protect pedestrians and bicyclists when the environmentally friendly cars are gliding along in electric mode.

NHTSA says 2,800 injuries a year could be prevented if hybrids and EVs make a noise at speeds less than 18 mph. Some vehicles, such as the Chevy Volt, Nissan Leaf and Toyota Prius, already use a warning system.

Finally for today, Cadillac is working to prime the pump for next week's reveal of the ELR extended-range hybrid with this photo of a prototype, wrapped in camouflage.

We've seen the ELR coupe before, as a concept. And this shot shows that the production car keeps most of the concept's sleek lines. Under the hood will be a version of the extended-range hybrid powertrain first used on the Chevrolet Volt.